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| author | Peter Robinson <pbrobinson@gmail.com> | 2016-09-30 23:29:56 +0100 |
|---|---|---|
| committer | Peter Robinson <pbrobinson@gmail.com> | 2016-09-30 23:29:56 +0100 |
| commit | 57bf058dba8870086227098ce3b687657c92d973 (patch) | |
| tree | b3e179f088cd3170d67cb7151e68b38a49e40657 /bcm2837-initial-support.patch | |
| parent | 0a2a0f0590041e9ed23be37d6beee0ca69220da7 (diff) | |
| download | kernel-57bf058dba8870086227098ce3b687657c92d973.tar.gz kernel-57bf058dba8870086227098ce3b687657c92d973.tar.xz kernel-57bf058dba8870086227098ce3b687657c92d973.zip | |
Some bcm283x VC4 fixes for Raspberry Pi
Diffstat (limited to 'bcm2837-initial-support.patch')
| -rw-r--r-- | bcm2837-initial-support.patch | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/bcm2837-initial-support.patch b/bcm2837-initial-support.patch index 0439fac7b..0e641d693 100644 --- a/bcm2837-initial-support.patch +++ b/bcm2837-initial-support.patch @@ -151,41 +151,3 @@ index 0000000..8216bbb +}; -- 2.9.3 - -From accfa15f3aef0dfca46d0eee02c1846c9b230fd5 Mon Sep 17 00:00:00 2001 -From: Eric Anholt <eric@anholt.net> -Date: Wed, 14 Sep 2016 19:21:29 +0100 -Subject: [PATCH] drm/vc4: Fall back to using an EDID probe in the absence of a - GPIO. - -On Pi0/1/2, we use an external GPIO line for hotplug detection, since -the HDMI_HOTPLUG register isn't connected to anything. However, with -the Pi3 the HPD GPIO line has moved off to a GPIO expander that will -be tricky to get to (the firmware is constantly polling the expander -using i2c0, so we'll need to coordinate with it). - -As a stop-gap, if we don't have a GPIO line, use an EDID probe to -detect connection. Fixes HDMI display on the pi3. - -Signed-off-by: Eric Anholt <eric@anholt.net> ---- - drivers/gpu/drm/vc4/vc4_hdmi.c | 3 +++ - 1 file changed, 3 insertions(+) - -diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c -index 4452f36..5adc0c7 100644 ---- a/drivers/gpu/drm/vc4/vc4_hdmi.c -+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c -@@ -174,6 +174,9 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) - return connector_status_disconnected; - } - -+ if (drm_probe_ddc(vc4->hdmi->ddc)) -+ return connector_status_connected; -+ - if (HDMI_READ(VC4_HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) - return connector_status_connected; - else --- -2.9.3 - |